2026440 has 96 divisors (see below), whose sum is σ = 7108920. Its totient is φ = 497664.

The previous prime is 2026397. The next prime is 2026447. The reversal of 2026440 is 446202.

2026440 is a `hidden beast` number, since 20 + 2 + 644 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 820836 + 1205604 = 906^2 + 1098^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2026447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4464 + ... + 4896.

2^2026440 is an apocalyptic number.

2026440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2026440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3554460).

2026440 is an abundant number, since it is smaller than the sum of its proper divisors (5082480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2026440 is a wasteful number, since it uses less digits than its factorization.

2026440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2026440 is about 1423.5308215841. The cubic root of 2026440 is about 126.5448814066.

The spelling of 2026440 in words is "two million, twenty-six thousand, four hundred forty".